Show the notifications app on the main page again

Remove hardcoded exclusion for the notifications app in the home page component.

artifacts/tx-os/src/pages/home.tsx

@@ -362,19 +362,7 @@ export default function HomePage() {
 
   useEffect(() => {
     if (!apps) return;
-    // #571: hide the Notifications app from the home grid (and the
-    // bottom dock — see `dockApps` filter below) regardless of its
-    // `isActive` flag. The top-bar bell icon is the canonical entry
-    // point for notifications, so a tile in the launcher is
-    // redundant. We filter at the client (rather than disabling the
-    // app server-side) so existing environments where Notifications
-    // is enabled stay enabled at the data layer — keeps deep links
-    // / direct navigation to `/notifications` working, and lets
-    // admins flip the app's visibility back without a DB change if
-    // they ever want a tile back.
-    const activeApps = apps.filter(
-      (a) => a.isActive && a.slug !== "notifications",
-    );
+    const activeApps = apps.filter((a) => a.isActive);
     setOrderedApps((prev) => {
       if (!prev) return activeApps;
       const byId = new Map(activeApps.map((a) => [a.id, a]));